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Analog Devices Inc./Maxim Integrated MAX8211EPA+
- Part No.:
- MAX8211EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX8211EPA+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,018
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Product details
Overview
MAX8211EPA+ from Analog Devices is a CMOS micropower voltage detector designed for microprocessor power-fail warning and undervoltage/overvoltage monitoring. It features a 1.15V bandgap reference, ±40mV threshold accuracy (±3.5%), 5µA quiescent current, 2.0V–16.5V supply range, and a current-limited 7mA open-drain output sink-used in battery-backup switching and logic-supply fault detection.
For engineers reviewing the MAX8211EPA+ datasheet, MAX8211EPA+ pinout, MAX8211EPA+ application, or MAX8211EPA+ equivalent, key selection criteria include trip-voltage programmability via external resistors, hysteresis output capability, -40°C to +85°C industrial temperature rating, and compatibility with legacy ICL8211 designs requiring low-power, high-accuracy voltage supervision.
Technical Context
The MAX8211EPA+ integrates a precision 1.15V bandgap reference and comparator to monitor input voltage at the THRESH pin; output activates when THRESH falls below reference (undervoltage mode). Its open-drain n-channel OUT stage is internally current-limited to 7mA (typ), enabling direct LED drive without series resistor.
Hysteresis is implemented via an independent open-drain p-channel HYST output, allowing user-defined positive feedback through external R3. Threshold disparity between OUT and HYST switching points is tightly controlled at ±0.1mV, eliminating chatter in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 16.5V - supports wide-input industrial and battery-powered systems without external regulation |
| Quiescent Current | 5µA (typ) - enables multi-year operation in coin-cell–powered backup circuits |
| Threshold Accuracy | ±40mV (±3.5%) at +25°C - ensures reliable trip-point repeatability across production batches |
| Output Sink Current | 7mA (typ), current-limited - allows direct interface to TTL/CMOS inputs or LEDs without external current-limiting components |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded control and power-supply monitoring |
| Hysteresis Output | Open-drain p-channel, up to 10mA - provides configurable noise immunity via external feedback network |
| Threshold Tempco | -200ppm/°C - minimizes drift over temperature, critical for stable long-term voltage supervision |
Pinout & Package
MAX8211EPA+ is housed in an 8-pin plastic DIP package (P8-1), with through-hole mounting and industry-standard footprint. Pin 1 = THRESH, Pin 2 = HYST, Pin 4 = V+, Pin 5 = GND, Pin 8 = OUT; Pins 3, 6, 7 are no-connect (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| THRESH (Pin 1) | Comparator input | Voltage divider node where threshold voltage is applied; MOSFET input draws ≤10nA, enabling high-R networks |
| HYST (Pin 2) | Hysteresis output | Open-drain p-channel output used to inject positive feedback into THRESH node for noise-immune switching |
| V+ (Pin 4) | Power supply | Primary supply rail (2.0V–16.5V); powers internal reference and comparator; also serves as HYST output reference |
| GND (Pin 5) | Ground reference | Analog and digital ground return; must be low-impedance for stable reference operation |
| OUT (Pin 8) | Main output | Open-drain n-channel output, current-limited to 7mA; sinks load when THRESH < 1.15V (undervoltage condition) |
Key Features
| Feature | Design Value |
|---|---|
| Programmable trip voltage | Set via two external resistors (R1/R2) referenced to internal 1.15V bandgap - eliminates need for trim pots or multiple fixed-threshold parts |
| Integrated hysteresis output | Dedicated HYST pin delivers up to 10mA with ±0.1mV matching to main threshold - enables precise, chatter-free switching without external op-amps |
| Low-leakage THRESH input | ≤10nA input current at +25°C - permits use of >10MΩ resistor networks, reducing system standby current by >90% vs. bipolar predecessors |
| ICL8211 drop-in replacement | Pin-compatible and functionally equivalent to ICL8211 in <16.5V applications - simplifies upgrade path with improved accuracy, lower IQ, and higher HYST drive |
| Industrial temperature grade | -40°C to +85°C operating range - validated for deployment in motor drives, PLCs, and telecom power modules without derating |
Applications
| Microprocessor Power-Fail Warning | Battery-Backup Switching |
|---|---|
Use Scenario: Detects falling VCC in embedded systems before brownout causes μP reset or data corruption. IC Role / Device Role / Timing Role: Voltage supervisor asserting NMI or RESET signal when supply drops below programmable threshold. Use Value: Prevents unsafe shutdown by triggering controlled save-and-halt sequence with 40µs response time and ±40mV trip accuracy. | Use Scenario: Monitors main supply in systems with backup batteries (e.g., RTC, SRAM, or real-time clocks). IC Role / Device Role / Timing Role: Enables automatic switchover from main to backup rail when primary voltage falls below safe level. Use Value: Ensures continuous operation during AC loss using 5µA quiescent current and hysteresis to avoid oscillation near switchover point. |
| Logic-Supply Undervoltage Detection | Power-Supply Fault Monitoring |
Use Scenario: Verifies 5V logic rail remains above 4.5V minimum required by TTL/CMOS ICs. IC Role / Device Role / Timing Role: Threshold detector configured per Figure 5 with 75mV hysteresis to reject line noise. Use Value: Eliminates false alarms in noisy industrial environments while maintaining ±3.5% trip tolerance across -40°C to +85°C. | Use Scenario: Supervises DC outputs of switch-mode power supplies in servers or base stations. IC Role / Device Role / Timing Role: Standalone fault flag generator that asserts on overvoltage or undervoltage events beyond spec limits. Use Value: Provides fail-safe protection with 1.5ms turn-off delay and current-limited 7mA output compatible with optocoupler or latch inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBZR | Fixed 3.3V threshold, no programmability, SOT-23-3 package, 0.9µA IQ | Lacks resistor-based trip adjustment and HYST output; suited only for single-rail fixed-threshold use | Select when board space is constrained and voltage threshold is invariant across design revisions |
| MAX6326LT31D3+ | Fixed 3.06V threshold, push-pull output, 1.6µA IQ, SC70-3 package | No hysteresis output or THRESH pin; not compatible with programmable detection schemes | Choose for ultra-low-power, space-constrained applications where external hysteresis is added separately |
Compared with TLV809E33DBZR and MAX6326LT31D3+, the MAX8211EPA+ uniquely supports field-programmable trip voltages, dual open-drain outputs (OUT + HYST), and industrial temperature operation - making it irreplaceable in multi-rail, noise-prone, or legacy-upgrade scenarios requiring flexibility and robustness.
Availability
MAX8211EPA+ is available at Aetrix Electronics and suitable for microprocessor voltage monitoring, battery-backup switching, and power-supply fault monitoring requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for MAX8211EPA+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX8211EPA+ belongs to the MAX8211/MAX8212 family of programmable voltage supervisors, engineered specifically for reliable, low-power power-fail detection and undervoltage/overvoltage monitoring in embedded control and power management systems.
FAQ
What is the maximum supply voltage rating for MAX8211EPA+?
The MAX8211EPA+ has an absolute maximum supply voltage of +18V, but its guaranteed operating range is 2.0V to 16.5V. Operation above 16.5V risks violating specifications and is not recommended. The device must never be used in circuits where transient overvoltage could exceed +18V, even momentarily.
Does MAX8211EPA+ support overvoltage detection?
Yes - although the MAX8211EPA+ is optimized for undervoltage detection (activating OUT when THRESH < 1.15V), it can implement overvoltage detection using external resistor networks and the HYST output for positive feedback. This configuration is explicitly shown in Figure 3 of the datasheet and validated across the -40°C to +85°C range.
Is MAX8211EPA+ pin-compatible with ICL8211?
Yes - the MAX8211EPA+ is a plug-in replacement for the bipolar ICL8211 in applications with supply voltages under 16.5V. Pin assignments, package outline (8-pin DIP), and functional behavior match exactly, while delivering improved threshold accuracy, lower quiescent current, and enhanced hysteresis drive capability.
What is the purpose of the HYST pin on MAX8211EPA+?
The HYST pin on MAX8211EPA+ is an open-drain p-channel output used to inject controlled positive feedback into the THRESH node. By connecting it through resistor R3 to the voltage divider, users define hysteresis width - preventing output chatter caused by noise or slow-moving input transitions near the trip point.
Can MAX8211EPA+ directly drive an LED without a current-limiting resistor?
Yes - the MAX8211EPA+'s current-limited 7mA (typ) open-drain OUT pin allows direct connection to standard indicator LEDs. This eliminates the need for an external series resistor in many status-indication applications, simplifying BOM and reducing PCB area while maintaining safe current levels across temperature and supply variations.
MAX8211EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- <1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX8211EPA+ FAQ
1.How can I place an order for MAX8211EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8211EPA+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX8211EPA+ reliable?
The price and inventory of MAX8211EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8211EPA+ is usually 5 days.
3.What payment methods are accepted for MAX8211EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8211EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8211EPA+?
MAX8211EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8211EPA+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX8211EPA+?
For technical support, including MAX8211EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8211EPA+ requirements.
6.How does Aetrix verify that MAX8211EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX8211EPA+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX8211EPA+ meets industry standards.
7.What is the process for return or replacement of MAX8211EPA+?
All MAX8211EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8211EPA+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX8211EPA+ part is unused and in its original packaging.
Return procedure for MAX8211EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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